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Critical investigation into the problems surrounding pillar holing operations
By L. Mpolokeng, J. P. Labuschagne, H. Yilmaz
"An investigation into pillar cutting was carried out at a platinum mine on the western limb of the Bushveld Complex. The focus was on crush pillar design and implementation in order to ultimately imp
Jan 1, 2015
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A validation study of the King stratification model
By M. Bwalya, L. Mabokela, L. C. Woollacott
This paper presents a study on the ability of the King stratification modelto describe density stratification patterns that are achieved under idealizedconditions. Tests were conducted in a batch jig
Jan 1, 2015
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An Integrated Risk Management Approach For Underground Coal Pillar Extraction In South Africa
Analysis for pillar extraction potential (A-PEP) is an intelligent tool, which could be used as a preliminary output indicator when considering the secondary extraction of regional support pillars in
Jan 1, 2005
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Technology Comparison Of CFB Versus Pulverized Fuel Firing For Utility Power Generation ? Synopsis
By J. Utt
Recent developments in circulating fluidized bed (CFB) once-through supercritical technology (OTSC) have enabled this technology to be offered as a utility-scale alternative competing head-to-head wit
Jan 1, 2012
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Towards Sustainability In Ferroalloy Production ? Synopsis
By L. Holappa
Ferroalloy production is an energy-intensive industrial sector with significant CO2 emissions. In this paper the current situation in ferroalloy processes is discussed from the standpoint of global en
Jan 1, 2010
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Importance of failure mechanisms for management of surface instability risk above abandones mines
By J. P. Josien, Didier C.
ABSTRACT: France now faces the closure of most of its mining sites. Surface instability risk may sometimes remain, especially where large underground voids exist. This paper illustrates the importance
Jan 1, 2003
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Predicting the probability of Iron-Rich Ultramafic Pegmatite (IRUP) in the Merensky Reef at Lonmin’s Karee Mine
By D. Hoffmann, S. Plumb
IRUP is an iron-rich ultramafic pegmatite rock that formed due to hot ironrich fluids and gases replacing local stratigraphic zones of the Bushveld Complex. This study focuses on the estimation of the
Jan 1, 2015
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Thermal Effects On Carbon Based Electrodes Close To A High Current Electric Arc
By J. A. Bakken, M. T. Jonsson, G. A. Saevarsdottir, H. Palsson
The electrodes of a Submerged Arc Furnaces carry a high current and are subject to enormous stresses caused by both the electric arc itself, and the current distribution within the electrode. The exte
Jan 1, 2007
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What boundary conditions should we apply? Applications to tunneling and to the AECL Underground Research Laboratory
By B. Amadei, F. Tonon
Rock stress measurement is cast in the more general context of the determination of boundary conditions for rock engineering. A study on the effect of elastic anisotropy on underground excavations rev
Jan 1, 2003
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Extending Empirical Evidence Through Numerical Modelling in Rock Engineering Design
Models are used in engineering to reproduce reality as faithfully as possible so that the expected response of a system for given actions or inputs can be determined. In the field of rock engineering,
Jan 1, 2014
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Developing Green Energy Projects in Southern Africa?A Mining Investment Approach
By M. Seeger
The demographics and the growing numbers of people provide a strong signal that the demand for electrical power in Southern Africa will grow considerably over the foreseeable future. Without a steady
Jan 1, 2010
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The use of indirect distributions of selective mining units for assessment of recoverable mineral resources designed for mine planning at Gold Fields’ Tarkwa Mine, Ghana
By J. Searra, M. Aboagye
"For new mining projects or for medium- to long-term areas of existing mines, drilling data is invariably on a relatively large grid. Direct estimates for selective mining units (SMUs), and also for m
Jan 1, 2015
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Mining through areas affected by abnormal stress conditions at Syferfonte in Colliery
By C. Legote
"This paper investigates the conditions leading to the indefinite termination of production in four critical primary panels at an underground coal mining operation, the observed shortcomings in the mi
Jan 1, 2015
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The Influence of Niobium Content on Austenite Grain Growth in Microalloyed Steels
By C. W. Siyasiya, K. A. Annan, W. E. Stumpf
"SynopsisThe relationship between niobium content and austenite grain growth has been investigated through hot rolling simulation on a Bähr dilatometer. The effect of delay time between passes during
Jan 1, 2015
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Plan compliance process for underground coal mines - Synopsis
By A. A. Angelov
This paper presents a unique method of monitoring the effectiveness of the planning process as well as the execution of mine plans. The method primarily determines the degree of deviation from the ori
Jan 1, 2010
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Pyrite roasting, an alternative to sulphur burning - Synopsis
The roasting of sulphide ores and concentrates is often the first step in the production of metals or chemicals. In many processes, the production of sulphuric acid is viewed as a by-product, whereas
Jan 1, 2009
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Thermophysical properties of rocks from the Bushveld Complex
By M. Q. W. Jones
This paper presents a compilation of physical properties of rocks from the Bushveld Complex. The database consists of more than 900 measurements each of thermal conductivity and density. The data are
Jan 1, 2015
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Reduction Behaviour Of The Akanvaara Chromites Of Northern Finland
By J. Härkki, R. Hiltunen
The Akanvaara intrusion (surface area 50-55 km2) in Savukoski, Northern Finland, hosts 23 distinct monocumulate layers of small euhedral chromite crystals enclosed in a silicate matrix. These chromiti
Jan 1, 2004
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Peak particle velocity prediction using support vector machines: a surface blasting case study
By S. R. Dindarloo
Although blasting is one of the most widely used methods for rock fragmentation, it has a major disadvantage in that it causes adjacent ground vibrations. Excessive ground vibrations can cause a wide
Jan 1, 2015
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Practices And Initiatives To Transfer Simrac Developed Technologies To Its Stakeholders And Other Parties
By P. van der Heever
The genesis of Simrac?s technology transfer practices and future initiatives are discussed in this report. Simrac produces a relatively large volume of research-based health and safety outputs that mu
Jan 1, 2002